CN1726370A - Illuminator with periscopic optical guidance - Google Patents

Abstract

The present invention discloses a periscope lighting system, including at least one light source (3) disposed at the lower part of the system and at least two optical functional elements (5, 2) formed as a whole to be connected to the light source (3).

Description

Lighting system with periscope light guide

technical field

The present invention relates to a lighting system capable of illuminating any zone, area or part of an object.

Background technique

Traditional lighting systems, especially those used to illuminate large areas such as roads, squares, parks and gardens, etc. are characterized in that all lighting bodies are placed at a certain height from the ground and are made of usually metal ( Upright) pillar support, the height of said pillar can reach 12-15 meters (expressway exit and square).

The reason for having such a tall support strut comes from the fact that if the light for the ground comes from a lower apex relative to the area to be illuminated, the beam will fall to the ground at a slight angle away from the area where the lighting fixture is placed, Even with a high-power light source, the light will be insufficient.

This traditional lighting system has many disadvantages.

These disadvantages partly relate to routine maintenance, since the light source must be intervened each time when the light source is no longer working and needs to be replaced, or in the event of a breakdown only to repair the switching system of the power supply and the lamp, it must be used given the height of the system structure. Special purpose truck. These trucks are equipped with a lift platform through which the technician can reach the (lighting) installation for intervention.

All this means different problems, such as very high intervention costs, road traffic problems when the lighting system involves roads, squares or road intersections, and when the supports of the lighting device are located in inaccessible areas such as areas with many trees or Intervention problems when on uneven roads. Other disadvantages also relate to the structure and wiring equipment. In the first case, since the illuminating device (lamp, switching ballast, reflector and housing) as a whole is very heavy, the struts used must have a certain resistance and robustness, whereby the associated Size and cost are considerable. In the second case, the cables supplying the lighting body must be equipped with conductors and thus have to be arranged inside the pillar, which leads to high installation and electrical material costs.

Contents of the invention

The object of the present invention is to achieve a lighting system that is practical, reliable, efficient, convenient and does not have the disadvantages of the known systems mentioned above.

The above objects are achieved by the present invention, which relates to a lighting system, in particular a lighting system suitable for illuminating large areas in open areas but whose working principle can also be used for illuminating small areas such as desks or unit rooms, which The light source of the lighting system and its switching system (if required, when using discharge tubes) are no longer located in the area at or near the top of the pillar of the lighting system, but are located in the area where the operator does not need to use special devices such as ladders or lifting platforms. In the area that can be easily reached; the light of the lighting system reaches the top of the structure of the lighting device through the periscope light guide (light transmission device), and then reaches the area by making full use of the advantages derived from the height, which For effective lighting by completely eliminating all the above-mentioned disadvantages.

Description of drawings

The invention will be better understood from the following preferred embodiments given as non-limiting examples with reference to the accompanying drawings, in which:

Figure 1 is a schematic diagram of a system that can be used to illuminate, for example, roads;

Fig. 2 is a cross-sectional view of a first light transmission optical functional element included in the road lighting system shown in Fig. 1;

Fig. 3 is a perspective view of the final light-transmitting optical functional element included in the roadway lighting system shown in Fig. 1;

Figure 4 is a schematic diagram of a desk lamp according to the present invention;

Fig. 5 is a cross-sectional view of a desk lamp according to the present invention.

Detailed ways

Referring to Figures 1-3, a lighting system for illuminating eg a road surface according to the invention will now be described.

The lighting system mainly includes a periscope light guide device 1 . This light guide comprises at least two "light-transmitting" optical functional elements, the purpose of which is to transmit light from a light source 3 - for example a lamp provided with a light emitter 12 - placed at the base of a tubular column 4 to the column 4, the final "light transmission" optical function element 2 properly spreads light from the upper end of the pillar 4 onto the part of the road surface 11 to be illuminated by means of its own specially designed material and shape characteristics.

The "light-transmitting" optical functional elements forming a so-called periscope guide as a whole are variable in number, shape and type, depending on the length and type. "Light-transmitting" optical functional elements are physical elements or devices of their own size and shape, which are adapted to transmit light along a straight optical path through air and, according to specific requirements, by reflection (reflectors, mirrors and diffusers) or Works optically through transmission (lenses, prisms, and fibers). The "light-transmitting" optical function must be suitably fabricated so that the light spreads as little as possible or in a controlled manner along the light path in air, so as to ensure that the light efficiency required by the lighting system can be met.

The "light-transmitting" optical function (marked 5 in Figure 1 and 7 in Figure 5) that receives light directly from the source and is defined as the first "light-transmitting" optical function in the functional element chain must intercept most of the possible Luminous flux emitted by a light source to enable sequential light transport along a light guide in a manner determined by the particular final lighting requirements to be achieved.

A "light-transmitting" optical function that receives light from a preceding optical function to disperse said light directly to the surface portion to be illuminated is defined as the final "light-transmitting" optical function (marked 2 in FIG. 4 is marked as 9), and the optical functional element is properly designed to meet the lighting requirements.

A periscope light guide must comprise at least two "light transmissive" optical functions in order to be able to increase the desired amount according to the light path, efficiency and light spread determined by the requirements of the lighting system.

The application of lighting systems for indoor use - such as the desk lamp in Figures 4 and 5 gives an example of the invention by way of related non-limiting example, where the periscope light guide comprises more than two "light transmission" Optical functional elements.

In this application, the illuminant 6 is located at the base (pedestal) of the lamp. A first "light-transmitting" optical function - here reflector 7 - intercepts the luminous flux of the lamp and transmits it to a second "light-transmitting" optical function 8 which in this embodiment The functional element is a flat reflector integral with the base of the lamp, the purpose of this optical functional element is to transmit light onto the final "light transmitting" optical functional element 9 located at the top of the lamp's pillar 13, in this embodiment The final "light transmitting" optical function 9 is a reflector with a suitably designed shape, the purpose of which optical function is to transmit light by reflection onto the part of the desk or other surface 10 on which the lamp is placed.

The advantages of the invention in this application are evident.

The terminal of the lamp at the top of the pillar 13 - from where the light spreads to the surface to be illuminated - is very light and has a low temperature, since this terminal has no light source and associated accessories such as lamp caps (holders) while ensuring operability , cables, etc.

Typically, when used for external lighting, the light guide 1 can be incorporated into the pillars (lampposts) 4 of the lighting system in order to protect these components from external factors and prevent the passage of dull objects that interrupt the transmission of light and damage the lighting system The operation of itself interferes with the light path passing through the guide.

If the light guide of the invention is fully or even only partially integrated into the pillar, the invention can also signal in addition to lighting.

If the pillar of the lighting system is made of a transparent film that both partially transmits the incident light and diffuses said light, the pillar will be illuminated and thus visible from the outside.

The present invention enables this effect because only part, but not all, of the light traveling along the periscope light guide reaches the final "light-transmitting" optical functional The transparent film then shoots out into the external environment and spreads sideways in the air along the light path.

This application of the present invention is beneficial, for example, in a road lighting system, if there is fog or low visibility, the lighting system arranged along the side of the road or in the center of the road intersection like the traditional lamp post can form a kind of lighting system installed along the road. The lighting system bends the entire light path of the road ahead of the bright guide.

Claims (15)

CLAIMS 1. A periscope lighting system comprising at least one light source arranged in the lower part of the system and at least two optical functional elements forming as a whole a light guide connected to the light source. 2. The lighting system according to claim 1, characterized in that it comprises one or more light sources adapted to generate light radiation in a spectrum in the visible and/or ultraviolet and/or infrared region. 3. The lighting system according to claim 1, characterized by two or more "light transmission" functional elements of the following types: reflectors, mirrors, diffusers, lenses, prisms or optical fibers. 4. Lighting system according to claim 3, characterized in that at least one "light transmission" functional element is shaped to deflect or transmit and spread light according to a predetermined method onto the site or area to be illuminated. 5. The lighting system according to any one of the preceding claims, characterized in that the optical functional elements forming the light guide as a whole are such that the light falling on one of these optical functional elements can be fully or is only partially deflected onto another optical function element of the light guide or onto the area or site to be illuminated, wherein the light guide guides the light from the illumination source to the outside of the lighting system where it falls part of the area. 6. A lighting system according to any one of the preceding claims, characterized in that light guides transporting light from the light source to the final "light transport" functional element are incorporated or partly or not incorporated into the lighting system In the structure of , light will fall onto the surface to be illuminated after said final "light transmission" functional element. 7. The lighting system of claim 6, wherein the light guide is incorporated or partially incorporated into a retaining structure having a surface that alters the reflective properties of the material from which the retaining structure is made treatment, the surface treatment is formed only on the inner surface of the retaining structure or only on its outer surface or on both surfaces. 8. Lighting system according to claim 7, characterized in that the retaining structure is made of special materials such as already used for specific transmission and diffusion in signal generation systems for roads and more membrane. 9. A lighting system according to claim 7 or 8, characterized in that said holding structure comprises special materials such as specific transmissive and diffusing films, said lighting system being adapted to illuminate and generate signals by using such light : The light travels along the optical path of the periscope light guide and falls on said material holding the structure, then exits and spreads into the environment. 10. A lighting system according to any one of the preceding claims, wherein the light source is mounted within a light guide. 11. Illumination system according to claim 10, characterized in that a (first) reflector is associated with the light source, which reflector acts as said first optical function element. 12. Lighting system according to claim 6, 10 or 11, characterized in that it is used in particular for lighting roads etc., and it comprises a tubular strut, the lower part of which accommodates the light source in such a way that it can be accessed/replaced from the ground The light source, the light guide are at least partially formed in the pillar. 13. A lighting system as claimed in claim 12, characterized in that a (second) reflector is attached to the top end of the strut, the reflector being adapted to deflect light from the light source downwards out of the pillar. 14. A lighting system according to claim 11, characterized in that, in application as a desk lamp or the like, the light source and the (first) associated reflector are arranged in a hollow support base having a An upwardly facing upper window exits the light beam from the light source and deflected from said (first) reflector. 15. The lighting system of claim 14, wherein a strut is connected to the support base, the strut extending upwardly with a second light adapted to deflect light from the window of the support base downwardly. reflector.

Images